Land vehicles – Wheeled – Extensible
Patent
1986-01-28
1987-09-01
Love, John J.
Land vehicles
Wheeled
Extensible
108116, 108146, 188 31, 280 4734, B62B 300
Patent
active
046904174
ABSTRACT:
The invention concerns a trolley comprising a trolley top supportable on a foldable trolley base, for transporting heavy objects particularly between a first support surface and a vehicle and then from the vehicle to a further support surface. The base is foldable between an erected condition in which the sides are spaced apart and upright portions project upwardly from support portions and a folded condition in which the sides are juxtaposed and the upright and support portions lie adjacent one another.
In the erected condition a locking pin, at each side, carried by the support portion projects into an aperture in the base of an upright portion to lock the two portions together. When the sides are moved to their juxtaposed positions a release pin attached to the locking pin causes withdrawal of the locking pin from the aperture to allow the upright and support portions to be relatively pivoted to the folded condition.
The upright portion at each side is formed from upper and lower members telescopically slidable relative to one another and the trolley includes spaced engagement members at each side for locking the upper and lower members in selected relative positions to fix the height of the trolley. The engagement members at each side are operable by a common operating handle pivotally mounted to the lower member.
A lever operated brake is mounted adjacent one wheel so that repeated movement of the lever in a single direction alternately releases and engages the brake.
REFERENCES:
patent: 3410232 (1968-11-01), Krueger
patent: 4280595 (1981-07-01), Timms et al.
patent: 4479566 (1984-10-01), Ishii
patent: 4534446 (1985-08-01), Barcons
Betts David R.
Edmonds Michael G.
Kentinental Engineering Limited
Love John J.
Mar Michael
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